Redmine/app/views/gantts/show.html.erb

<% @gantt.view = self %>
<h2><%= @query.new_record? ? l(:label_gantt) : h(@query.name) %></h2>

<%= form_tag({:controller => 'gantts', :action => 'show',
             :project_id => @project, :month => params[:month],
             :year => params[:year], :months => params[:months]},
             :method => :get, :id => 'query_form') do %>
<%= hidden_field_tag 'set_filter', '1' %>
<fieldset id="filters" class="collapsible <%= @query.new_record? ? "" : "collapsed" %>">
  <legend onclick="toggleFieldset(this);"><%= l(:label_filter_plural) %></legend>
  <div style="<%= @query.new_record? ? "" : "display: none;" %>">
    <%= render :partial => 'queries/filters', :locals => {:query => @query} %>
  </div>
</fieldset>
<fieldset class="collapsible collapsed">
  <legend onclick="toggleFieldset(this);"><%= l(:label_options) %></legend>
  <div style="display: none;">
    <table>
      <tr>
        <td>
          <fieldset>
            <legend><%= l(:label_related_issues) %></legend>
            <label>
              <%= check_box_tag "draw_rels", params["draw_rels"], params[:set_filter].blank? || params[:draw_rels] %>
              <% rels = [IssueRelation::TYPE_BLOCKS, IssueRelation::TYPE_PRECEDES] %>
              <% rels.each do |rel| %>
                <% color = Redmine::Helpers::Gantt::DRAW_TYPES[rel][:color] %>
                <%= content_tag(:span, '&nbsp;&nbsp;&nbsp;'.html_safe,
                                :style => "background-color: #{color}") %>
                <%= l(IssueRelation::TYPES[rel][:name]) %>
              <% end %>
            </label>
          </fieldset>
        </td>
        <td>
          <fieldset>
            <legend><%= l(:label_gantt_progress_line) %></legend>
            <label>
              <%= check_box_tag "draw_progress_line", params[:draw_progress_line], params[:draw_progress_line] %>
              <%= l(:label_display) %>
            </label>
          </fieldset>
        </td>
      </tr>
    </table>
  </div>
</fieldset>

<p class="contextual">
  <%= gantt_zoom_link(@gantt, :in) %>
  <%= gantt_zoom_link(@gantt, :out) %>
</p>

<p class="buttons">
<%= text_field_tag 'months', @gantt.months, :size => 2 %>
<%= l(:label_months_from) %>
<%= select_month(@gantt.month_from, :prefix => "month", :discard_type => true) %>
<%= select_year(@gantt.year_from, :prefix => "year", :discard_type => true) %>
<%= hidden_field_tag 'zoom', @gantt.zoom %>

<%= link_to_function l(:button_apply), '$("#query_form").submit()',
                     :class => 'icon icon-checked' %>
<%= link_to l(:button_clear), { :project_id => @project, :set_filter => 1 },
            :class => 'icon icon-reload' %>
</p>
<% end %>

<%= error_messages_for 'query' %>
<% if @query.valid? %>
<%
  zoom = 1
  @gantt.zoom.times { zoom = zoom * 2 }

  subject_width = 330
  header_height = 18

  headers_height = header_height
  show_weeks = false
  show_days  = false

  if @gantt.zoom > 1
    show_weeks = true
    headers_height = 2 * header_height
    if @gantt.zoom > 2
        show_days = true
        headers_height = 3 * header_height
    end
  end

  # Width of the entire chart
  g_width = ((@gantt.date_to - @gantt.date_from + 1) * zoom).to_i
  @gantt.render(:top => headers_height + 8,
                :zoom => zoom,
                :g_width => g_width,
                :subject_width => subject_width)
  g_height = [(20 * (@gantt.number_of_rows + 6)) + 150, 206].max
  t_height = g_height + headers_height
%>

<% if @gantt.truncated %>
  <p class="warning"><%= l(:notice_gantt_chart_truncated, :max => @gantt.max_rows) %></p>
<% end %>

<table style="width:100%; border:0; border-collapse: collapse;">
<tr>
<td style="width:<%= subject_width %>px; padding:0px;">
  <%
    style  = ""
    style += "position:relative;"
    style += "height: #{t_height + 24}px;"
    style += "width: #{subject_width + 1}px;"
  %>
  <%= content_tag(:div, :style => style) do %>
    <%
      style  = ""
      style += "right:-2px;"
      style += "width: #{subject_width}px;"
      style += "height: #{headers_height}px;"
      style += 'background: #eee;'
    %>
    <%= content_tag(:div, "", :style => style, :class => "gantt_hdr") %>
    <%
      style  = ""
      style += "right:-2px;"
      style += "width: #{subject_width}px;"
      style += "height: #{t_height}px;"
      style += 'border-left: 1px solid #c0c0c0;'
      style += 'overflow: hidden;'
    %>
    <%= content_tag(:div, "", :style => style, :class => "gantt_hdr") %>
    <%= content_tag(:div, :class => "gantt_subjects") do %>
      <%= @gantt.subjects.html_safe %>
    <% end %>
  <% end %>
</td>

<td>
<div style="position:relative;height:<%= t_height + 24 %>px;overflow:auto;" id="gantt_area">
<%
  style  = ""
  style += "width: #{g_width - 1}px;"
  style += "height: #{headers_height}px;"
  style += 'background: #eee;'
%>
<%= content_tag(:div, '&nbsp;'.html_safe, :style => style, :class => "gantt_hdr") %>

<% ###### Months headers ###### %>
<%
  month_f = @gantt.date_from
  left = 0
  height = (show_weeks ? header_height : header_height + g_height)
%>
<% @gantt.months.times do %>
  <%
    width = (((month_f >> 1) - month_f) * zoom - 1).to_i
    style  = ""
    style += "left: #{left}px;"
    style += "width: #{width}px;"
    style += "height: #{height}px;"
  %>
  <%= content_tag(:div, :style => style, :class => "gantt_hdr") do %>
    <%= link_to h("#{month_f.year}-#{month_f.month}"),
                @gantt.params.merge(:year => month_f.year, :month => month_f.month),
                :title => "#{month_name(month_f.month)} #{month_f.year}" %>
  <% end %>
  <%
    left = left + width + 1
    month_f = month_f >> 1
  %>
<% end %>

<% ###### Weeks headers ###### %>
<% if show_weeks %>
  <%
    left = 0
    height = (show_days ? header_height - 1 : header_height - 1 + g_height)
  %>
  <% if @gantt.date_from.cwday == 1 %>
    <%
      # @date_from is monday
      week_f = @gantt.date_from
    %>
  <% else %>
    <%
      # find next monday after @date_from
      week_f = @gantt.date_from + (7 - @gantt.date_from.cwday + 1)
      width = (7 - @gantt.date_from.cwday + 1) * zoom - 1
      style  = ""
      style += "left: #{left}px;"
      style += "top: 19px;"
      style += "width: #{width}px;"
      style += "height: #{height}px;"
    %>
    <%= content_tag(:div, '&nbsp;'.html_safe,
                    :style => style, :class => "gantt_hdr") %>
    <% left = left + width + 1 %>
  <% end %>
  <% while week_f <= @gantt.date_to %>
    <%
      width = ((week_f + 6 <= @gantt.date_to) ?
                  7 * zoom - 1 :
                  (@gantt.date_to - week_f + 1) * zoom - 1).to_i
      style  = ""
      style += "left: #{left}px;"
      style += "top: 19px;"
      style += "width: #{width}px;"
      style += "height: #{height}px;"
    %>
    <%= content_tag(:div, :style => style, :class => "gantt_hdr") do %>
      <%= content_tag(:small) do %>
        <%= week_f.cweek if width >= 16 %>
      <% end %>
    <% end %>
    <%
      left = left + width + 1
      week_f = week_f + 7
    %>
  <% end %>
<% end %>

<% ###### Days headers ####### %>
<% if show_days %>
  <%
    left = 0
    height = g_height + header_height - 1
    wday = @gantt.date_from.cwday
  %>
  <% (@gantt.date_to - @gantt.date_from + 1).to_i.times do %>
    <%
      width =  zoom - 1
      style  = ""
      style += "left: #{left}px;"
      style += "top:37px;"
      style += "width: #{width}px;"
      style += "height: #{height}px;"
      style += "font-size:0.7em;"
      clss = "gantt_hdr"
      clss << " nwday" if @gantt.non_working_week_days.include?(wday)
    %>
    <%= content_tag(:div, :style => style, :class => clss) do %>
      <%= day_letter(wday) %>
    <% end %>
    <%
      left = left + width + 1
      wday = wday + 1
      wday = 1 if wday > 7
    %>
  <% end %>
<% end %>

<%= @gantt.lines.html_safe %>

<% ###### Today red line (excluded from cache) ###### %>
<% if Date.today >= @gantt.date_from and Date.today <= @gantt.date_to %>
  <%
    today_left = (((Date.today - @gantt.date_from + 1) * zoom).floor() - 1).to_i
    style  = ""
    style += "position: absolute;"
    style += "height: #{g_height}px;"
    style += "top: #{headers_height + 1}px;"
    style += "left: #{today_left}px;"
    style += "width:10px;"
    style += "border-left: 1px dashed red;"
  %>
  <%= content_tag(:div, '&nbsp;'.html_safe, :style => style, :id => 'today_line') %>
<% end %>
<%
  style  = ""
  style += "position: absolute;"
  style += "height: #{g_height}px;"
  style += "top: #{headers_height + 1}px;"
  style += "left: 0px;"
  style += "width: #{g_width - 1}px;"
%>
<%= content_tag(:div, '', :style => style, :id => "gantt_draw_area") %>
</div>
</td>
</tr>
</table>

<table style="width:100%">
<tr>
  <td align="left">
    <%= link_to_content_update("\xc2\xab " + l(:label_previous),
                               params.merge(@gantt.params_previous)) %>
  </td>
  <td align="right">
    <%= link_to_content_update(l(:label_next) + " \xc2\xbb",
                               params.merge(@gantt.params_next)) %>
  </td>
</tr>
</table>

<% other_formats_links do |f| %>
  <%= f.link_to 'PDF', :url => params.merge(@gantt.params) %>
  <%= f.link_to('PNG', :url => params.merge(@gantt.params)) if @gantt.respond_to?('to_image') %>
<% end %>
<% end # query.valid? %>

<% content_for :sidebar do %>
  <%= render :partial => 'issues/sidebar' %>
<% end %>

<% html_title(l(:label_gantt)) -%>

<% content_for :header_tags do %>
  <%= javascript_include_tag 'raphael' %>
  <%= javascript_include_tag 'gantt' %>
<% end %>

<%= javascript_tag do %>
  var issue_relation_type = <%= raw Redmine::Helpers::Gantt::DRAW_TYPES.to_json %>;
  $(document).ready(drawGanttHandler);
  $(window).resize(drawGanttHandler);
  $(function() {
    $("#draw_rels").change(drawGanttHandler);
    $("#draw_progress_line").change(drawGanttHandler);
  });
<% end %>